CN105220322B - The rapier loom and control method of a kind of let-off mechanism including the let-off mechanism - Google Patents
The rapier loom and control method of a kind of let-off mechanism including the let-off mechanism Download PDFInfo
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Abstract
The invention discloses a kind of let-off mechanism, rapier loom and control method including the let-off mechanism, compared with the independent control of prior art, strengthen the contact between each let-off mechanism, by giving variator sets gearratio, give certain rotating ratio between each warp let-off roller, during the warp let-off, detected by sensor and controller calculates the midway drive value for obtaining the respective speed of multiple warp let-off rollers, and the rotation speed change of motor is controlled after being averaged to multiple midway drive values, be conducive to improving the degree of accuracy and the stability of rotation speed change, because the direction that each warp let-off roller rotating speed changes is always maintained at unanimously being conducive to the trend that warp tension changes on each warp let-off roller to reach unanimity, by calculating two steps of midway drive value and result motivation value, be conducive to reducing influence of the motor rotation speed change for warp thread moment tension force, to ensure the preset value of the stable trend controller of warp tension.
Description
Technical field
The present invention relates to field of textile equipment, more specifically, it relates to a kind of warp thread line sending equipment.
Background technology
Rapier loom is the shuttleless loom being most widely used at present, and it is except with shuttleless loom high speed, high automation
Outside the characteristics of degree, high-effect production, its positive filling insertion way has very strong varietal adaptation, adapts to drawing for all kinds of yarns
Latitude, in addition rapier loom also have obvious advantage in terms of many barry dyeing weavings, the color that can produce up to 16 barry dyeing yarns is knitted
Product.As shuttleless loom replaces fly-shuttle loom, rapier loom is by the main production machine as woven fabric.Rapier loom is by passing through
Warp in axle, let-off motion, workbench, bringer device and cloth-rolling device composition, warp beam enters work by let-off motion
Platform, with the parallel that bringer device is sent into weave in rolls, finished product is rolled into finally by cloth-rolling device.
Rapier loom forms fabric using warp thread, the intertexture of weft yarn, and weft yarn can have two colors or polychrome, but warp thread is often
Single tension force, in single warp beam weaving process of loom, the tissue of some specialities fabrics is different, and manufacturing process is required also not
Together, such as flannelette, it is by Dual-layer cloth and middle suede through constituting, and the requirement for warp thread is also become by a kind of original warp thread
For two kinds of warp thread, if still continuing to use existing single warp beam loom weaves this fabric, it is few to will result in part warp yarns point, knits
Reduce, cause tension force less than normal, and during this kind fabric is weaved cracked ends rate can be caused high, the rough quality problems such as many, seriously
When even can cause gate assignment problem shut down can not produce.
For the situation, it need to be weaved by using double-beam, double-beam loom has two sets of let-off motions, often set includes the warp let-off
Servomotor, travelling gear, the back rest, tension sensing device, tension spring etc., while upper two warp beams, general to place during weaving
Form can utilize yarn beam diameter to greatest extent to place up and down, general to use the warp of 800 millimeters of diameter up and down
Axle, what is had may also reach up 1000 mm dia warp beams.The warp thread too small to tension force carries out independent warping in warping, so
And, all very complicated using the loom let-off structure of double-beam at present, loom operation is not steady enough, to the tension force between two warp axis
Can not effectively it be controlled, and production efficiency is relatively low.
Application No. 201310693628.X patent document discloses a kind of Novel double-beam rapier loom, including machine
Set in frame, let-off mechanism, beating-up mechanism, drive system, winding mechanism, frame after left wallboard and right wallboard, let-off mechanism
Side sets heald frame mechanism, and the first warp axis is horizontally fixed on through on axle bed, the two ends of the second warp axis are fixed on independently of frame
Fixing device on, the present invention by the way that the second warp axis is set in parallel in into the first warp axis by the fixed support independently of frame
Lower section, the first warp axis and the second warp axis are driven using independent driving system, are placed above and below the double-beam of the technical scheme, though
Certain space can be so saved, but combining coiling in actual conditions warp beam has a large amount of warps, its total quality is very big, on
The installation of square warp beam is more inconvenient, and is not in contact with up and down between warp beam, it is necessary to using different testing agencies, controlling organization with
And drive system, for whole rapier loom, add and regulation is installed more between use cost, and multigroup train of mechanism
Inconvenience, the setting of motor easily influences the operation stability of rapier loom up and down in the technical scheme, although technical side
A series of means are added in case to be used to control steadily, but this virtually increases integrally-built complexity and is mounted to again
This, and it is unfavorable for regulation, in summary, there are improvements in prior art.
The content of the invention
In view of the deficienciess of the prior art,
The purpose of the present invention one is to provide a kind of let-off mechanism, can be provided for different warp thread and suitably convey speed
Degree, and mechanism is simple, easy to adjust accurate.
The purpose of the present invention two is to provide a kind of double-beam rapier loom, can effectively control between two warp axis
Power and with higher production efficiency.
The purpose of the present invention three is to provide a kind of control method of let-off mechanism, can realize the change with warp tension
And accurately change the warp let-off speed of warp let-off roller.
To achieve the above object one, the invention provides following technical scheme:
A kind of let-off mechanism, including controller and at least two groups warp let-off components, warp let-off component described in every group include the warp let-off
Roller and tension detection unit, multiple warp let-off rollers are connected by variable transmission mechanism, and the variable transmission mechanism is by driving
Dynamic motor driving simultaneously drives each warp let-off roller to rotate with default gearratio, and it is single that the controller couples multiple tension force detections simultaneously
Member is calculated for controlling many of motor rotating speed respectively with detecting the tension value of multiply warp according to the plurality of tension value
Individual midway drive value, multiple midway drive values are asked and obtain result motivation value afterwards, and control driving according to the result motivation value
Motor is rotated.
Also include the carding mechanism that warp thread is divided into upper and lower layer warp thread along warp thread transmission direction, carding mechanism and each warp let-off
Component, which is corresponded, to be set, and the carding mechanism includes the two combing bars be arrangeding in parallel and is connected to the fix bar of let-off mechanism,
Combing bar close to fix bar side is connected bar by connector, is connected between two combing bars by connector, the comb
Manage bar to be located between upper and lower layer warp thread, the upper and lower layer warp thread is between two combing bars in staggeredly.
By using above-mentioned technical proposal, the warp let-off is carried out to the warp thread of differential tension using different warp let-off components, used
Two independent tension detection units carry out warp tension testing, are controlled using a controller, are conducive to improving tension force
The accuracy of detection, disclosure satisfy that the tension requirements of different fabrics, by setting variable transmission mechanism and motor by difference
Warp let-off roller link together and realize Synchronous Transmission, because the ratio between tension force between different yarns depends on the material sheet of yarn
Body, is driven multiple warp let-off rollers using a motor and ensure that the rotating ratio between each warp let-off roller is consistent, favorably
In the directionality for ensureing warp tension change on different warp let-off rollers, while a motor advantageously reduces cost, it is to avoid because
Multiple motors mutually vibrate the influence for let-off mechanism stability, are calculated by controller and obtain multiple warp let-off rollers each speed
Midway drive value, and the rotation speed change of motor is controlled after being averaged to multiple midway drive values, is conducive to improving rotating speed
The degree of accuracy of variation and stability, because the direction that each warp let-off roller rotating speed changes is always maintained at unanimously being conducive to each warp let-off roller
The trend of upper warp tension change reaches unanimity, and by calculating two steps of midway drive value and result motivation value, is conducive to subtracting
Small motor rotation speed change for warp thread moment tension force influence, to ensure the default of the stable trend controller of warp tension
Value.
The setting of carding mechanism can avoid the generation of the mutual wrapping phenomena of warp thread, using two combing be arrangeding in parallel bars
By warp thread be divided into above and below two layers, between two combing bars levels warp thread formation interlock, after two combing bars, originally
Top line be changed into lower layer warp yarns, original lower layer warp yarns are changed into top line, play and be completely separated, it is to avoid secondary winding is viscous
The situation of conjunction, is conducive to wearing for rapier loom beating-up mechanism parallel.
The present invention is further arranged to:The variable transmission mechanism includes linkage unit and gearratio adjusting part, described
Linkage unit includes gangbar and bevel gear set, is connected between motor and gearratio adjusting part by gangbar,
It is connected between gearratio adjusting part and warp let-off roller by gangbar and bevel gear set.
By using above-mentioned technical proposal, motor, gearratio adjusting part are connected using gangbar and bevel gear set,
Its attachment structure is simple, stable, the convenient control of setting of gearratio adjusting part and regulation motor and send between the roller of footpath
Rotating ratio.
The present invention is further arranged to:The gearratio adjusting part is gearbox.
By using above-mentioned technical proposal, gearbox designs are simple, by gear come engaged transmission, with higher transmission
Efficiency, maintenance costs are relatively low.
The present invention is further arranged to:The warp let-off component also includes transmission rod, and the tension detection unit includes being located at
Tension sensor on transmission rod and the tension spring positioned at transmission rod two ends.
By using above-mentioned technical proposal, warp tension is detected using tension sensor, voluntarily balanced by tension spring
Tension force suffered by warp thread, it is simple and convenient using installing, warp tension transient change can be avoided for the influence through yarn quality.
The present invention is further arranged to:Each transmission rod surface is provided with to place in some grooves, the groove and used
In the piezoelectric type tension sensor of detection yarn tension.
By using above-mentioned technical proposal, open up groove on transmission rod surface and sensor is set in groove, according to each
The pressure value of individual groove pressure sensor calculates the pressure of whole warp thread, and this method maximum feature is direct detection single yarn
Tension force, the tension force radix of detection is small, so as to reduce the range ability of sensor, improves the precision of detection;In addition, it can react
Go out the stressing conditions of every one thread, avoid, because a certain one thread is broken because of overtension, broken yarn phenomenon occur, so as to protect
The quality of product is demonstrate,proved.
To achieve the above object two, the invention provides following technical scheme:
A kind of double-beam rapier loom, including frame, beating-up mechanism, winding mechanism and drive system, in addition to it is above-mentioned
Let-off mechanism, the let-off mechanism includes two groups of warp let-off components.
By using above-mentioned technical proposal, same weft yarn passes through together with two kinds of similar and different warp yarns
The tension force of control warp thread makes the tension force of weft yarn show periodic change in the range of reed width, and Fabric Style is rich and varied, carries
The production efficiency and product quality of textile are risen;Increase the weaving quantity of warp thread using the increase of warp let-off roller, meet Gao Jing
The requirement of close fabric, while the need for meeting to two kinds of warp thread unique fabrics, the quality of production of product can be effectively improved and various
Property.
To achieve the above object three, the invention provides following technical scheme:
A kind of control method based on above-mentioned let-off mechanism,
Step one:By calculating the warp tension ratio of two kinds of different warp thread, the gearratio of speed changer is given;
Step 2:Controller is by receiving the numerical value of all tension sensors on each transmission rod, by each transmission rod
On all tension sensor numerical value average;
Step 3:The tension value of each transmission rod is compared with controller warp tension value set in advance respectively,
Then multiple tension value difference after comparing do not calculate multiple midway drive values for controlling motor rotating speed;
Step 4:The multiple midway drive values obtained according to step 3 obtain result motivation value after averaging, and according to this
As a result motivation value control motor is rotated, that is, controls the line sending speed of warp thread.
By using above-mentioned technical proposal, compared with the independent control of prior art, strengthen between each let-off mechanism
Contact, by giving variator sets gearratio, give certain rotating ratio between each warp let-off roller, during the warp let-off, lead to
Cross sensor detection and controller calculates the midway drive value for obtaining the respective speed of multiple warp let-off rollers, and to multiple midway drive values
The rotation speed change of motor is controlled after averaging, is conducive to improving the degree of accuracy and the stability of rotation speed change, because each send
The direction changed through roller rotating speed is always maintained at unanimously being conducive to the trend that warp tension changes on each warp let-off roller to reach unanimity, and leads to
Two steps of calculating midway drive value and result motivation value are crossed, are conducive to reducing motor rotation speed change for warp thread moment
The influence of power, to ensure the preset value of the stable trend controller of warp tension.
Brief description of the drawings
Fig. 1 is a kind of structural representation of double-beam rapier loom of the invention;
Fig. 2 is a kind of structural representation of let-off mechanism of the invention;
Fig. 3 is a kind of part-structure schematic diagram of let-off mechanism of the invention;
Fig. 4 is a kind of top view of let-off mechanism part-structure of the invention;
Fig. 5 is a kind of structural representation of let-off mechanism subassembly warp let-off component of the invention;
Fig. 6 is a kind of side schematic view of let-off mechanism subassembly warp let-off component of the invention;
Fig. 7 is a kind of top view of let-off mechanism subassembly warp let-off component of the invention;
Fig. 8 is partial enlarged drawing I of the invention;
Fig. 9 is partial enlarged drawing II of the invention;
Figure 10 is partial enlarged drawing III of the invention;
Figure 11 is partial enlarged drawing IV of the invention;.
Reference:1st, frame;2nd, winding mechanism;3rd, beating-up mechanism;4th, controller;5th, variable transmission mechanism;51st, speed change
Case;52nd, linkage unit;521st, bevel gear set;522nd, gangbar;6th, warp let-off component;7th, carding mechanism;71st, bar is combed;72nd, even
Fitting;73rd, fix bar;8th, warp thread;9th, motor;10th, wallboard;11st, warp let-off roller;12nd, the back rest;13rd, transmission rod, 131, it is recessed
Groove;14th, tension detection unit;141st, tension spring;142nd, tension sensor.
Embodiment
Embodiment one
The present invention will be further described to Figure 10 for reference picture 2.
A kind of let-off mechanism, including controller 4 and at least two groups warp let-off components 6, are sent in present embodiment from two groups
Through component 6, and two groups of warp let-off components 6 are in that front and rear side-by-side parallel is set, warp let-off component 6 described in two groups include warp let-off roller 11, after
Beam 12, transmission rod 13, left and right sidesing wall plate 10 and tension detection unit 14, warp let-off roller 11, the back rest 12, transmission rod 13 are both secured to left and right
Between wallboard 10 and in arranged in parallel, when the warp let-off, warp thread 8 departs from from warp let-off roller 11 sequentially passes through the back rest 12 and power transmission
Bar 13, as shown in figure 8, tension detection unit 14 includes the tension sensor 142 being located on transmission rod 13 and positioned at transmission rod 13
The tension spring 141 at two ends, one end of tension spring 141 connects the end of transmission rod 13, and the other end connects the wallboard 10 of both sides, two
Warp let-off roller 11 on group warp let-off component 6 is connected by variable transmission mechanism 5, and the variable transmission mechanism 5 is by motor 9
Drive and simultaneously drive each warp let-off roller 11 to rotate with default gearratio, controller 4 couple simultaneously two tension detection units 14 with
The tension value of two groups of different warps is detected, and is carried out respectively with the original default tension value of controller 4 according to two tension values
Compare, two Tension Differences are obtained more afterwards, so that correspondence calculates two midway drives for controlling the rotating speed of motor 9
Value, two midway drive values are asked and obtain result motivation value afterwards, and are rotated according to result motivation value control motor 9.
Such as Fig. 1, Fig. 3, Fig. 4, variable transmission mechanism 5 includes linkage unit 52 and gearratio adjusting part, the linkage groups
Part 52 includes gangbar 522 and bevel gear set 521, and the gearratio adjusting part is gearbox 51.
Embodiment one:Motor 9 is placed between two groups of warp let-off components 6,6 points are first, second by warp let-off component
Warp let-off component 6, places gearbox 51, the one end of motor 9 and gearbox 51 between the warp let-off component 6 of motor 9 and first
Between be connected by gangbar 522, the other end of motor 9 directly passes through cone with the warp let-off roller 11 of the second warp let-off component 6
Gear train 521 is connected, and gangbar 522 and bevel gear are passed through between the warp axis on the warp let-off component 6 of gearbox 51 and first
Group 521 is connected.
Embodiment two:Motor 9 is placed between two groups of warp let-off components 6,6 points are first, second by warp let-off component
Warp let-off component 6, places gearbox 51, driving electricity between the warp let-off component 6 of motor 9 and first and the second warp let-off component 6
The two ends of machine 9 connect two gearboxes 51 and are connected by gangbar 522 respectively, pass through between gearbox 51 and warp let-off roller 11
Gangbar 522 and bevel gear set 521 are connected.
Mode one can reach the effect of regulation with mode two, and mode one reduces another gearbox compared with mode two
51, cost has been saved, but gearratio regulation can be also restricted therewith, it is considered to selection mode two easy to adjust.
As shown in figure 9, each surface of transmission rod 13 is provided with some grooves 131, groove 131 is set in a ring, uniformly
It is distributed on transmission rod 13, the quantity of groove 131 is preferably 4 to 6, is placed in groove 131 for detecting yarn tension
Piezoelectric type tension sensor 142.
Groove 131 is opened up on the surface of transmission rod 13 and sensor is set in groove 131, according to each internal pressure of groove 131
The pressure value of force snesor calculates the pressure of whole warp thread 8, and this method maximum feature is the tension force of direct detection single yarn, inspection
The tension force radix of survey is small, so as to reduce the range ability of sensor, improves the precision of detection;In addition, every yarn can be reflected
The stressing conditions of line, avoid, because a certain one thread is broken because of overtension, broken yarn phenomenon occur, so as to ensure that product
Quality.
As shown in Figure 10, Figure 11, it is upper and lower layer warp thread 8 by 8 points of warp thread that rapier loom, which is also included along the transmission direction of warp thread 8,
Carding mechanism 7, carding mechanism 7 and each warp let-off component 6, which are corresponded, to be set.What the carding mechanism 7 be arranged in parallel including two
Bar 71 and the fix bar 73 being connected on let-off mechanism between left and right sidesing wall plate 10 are combed, fix bar 73 is set with warp let-off roller 11 in parallel
Put, the combing bar 71 close to the side of fix bar 73 is connected bar 73 by connector 72, two comb and pass through connection between bars 71
Part 72 is connected, and above-mentioned connector 72 can select common rope yarn, and rope yarn is set in end and the fix bar 73 of two combing bars 71
The end of wherein one combing bar 71, the combing bar 71 is located between upper and lower layer warp thread 8, and upper and lower layer warp thread 8 is in two combs
It is in be staggered between reason bar 71.
Use two combing be arrangeding in parallel bars 71 by 8 points of warp thread for two layers up and down, between two combing bars 71 above and below
The layer formation of warp thread 8 interlocks, and after two combing bars 71, original top line 8 is changed into lower layer warp yarns 8, original lower floor
Warp thread 8 is changed into top line 8, plays and is completely separated, it is to avoid the situation of secondary winding bonding, forms opening consequently facilitating arrow shaft is knitted
The parallel of machine beating-up mechanism 3 is worn.
The existing tension detecting method of warp thread 8 is the back rest 12 of detecting element one that full wafer yarn is bypassed to the tension force of warp thread 8, is passed through
The back rest 12 senses the size of the tension force of warp thread 8, and then carries out the tension adjustment of warp thread 8.Because the back rest 12 is relatively large in diameter, and to warp thread 8
The sensing of dynamic tension and do and periodically freely swing, the inertia of the back rest 12 is larger, to tension signal fluctuate transmission sensitivity
It is not high.And this detection method is used as warp on loom 8 the drawbacks of can avoid Tradition Looms detection method without the back rest 12 now
The sensing element of tension force, again with detecting element of the bar as the tension force of warp thread 8.Due to only having selected the yarn of 4 to 6 place positions
Line is as the standard of detection tension force, and so detection tension value greatly reduces, and the diameter and volume of required tension rail all contract significantly
It is small, so its to opening, remain silent and because warper beam unwinding diameter change caused by the tension variation of warp on loom 8 can and
When seizure, improve sensitivity and accuracy of detection.
Embodiment two
Referring to figs. 1 to Figure 11, a kind of double-beam rapier loom, including frame 1, beating-up mechanism 3, winding mechanism 2 and driving
System, in addition to above-mentioned let-off mechanism, the let-off mechanism include two groups of warp let-off components 6.
The technical program is when it is implemented, first according to the gearratio of the default gearbox 51 of yarn tension, open motor
9, each warp let-off roller 11 starts to rotate, and warp thread 8 sequentially passed through after the back rest 12 and transmission rod 13, be divided into above and below two layers of warp thread 8, on
The top of a layer warp thread 8 combing bar 71 therefrom is worn toward the lower section of another combing bar 71, and lower layer warp yarns 8 are then passed through with upper strata
Wearing for yarn 8 is in opposite direction, so as to constitute structure staggeredly between two combing bars 71, after carding mechanism 7, two groups are sent
Pass through through respective two layers of the warp thread 8 of component 6 on the platform of frame 1, wear to form weaving cloth by the parallel of beating-up mechanism 3.
Embodiment three
Reference picture 2 is to Figure 11, a kind of a kind of control method of let-off mechanism based on described in embodiment one,
Step one:By calculating the warp tension ratio of two kinds of different warp thread 8, the gearratio of speed changer is given, motor is operated
9, start the conveying of warp thread 8;
Step 2:Controller 4, will be each by receiving the numerical value of all tension sensors 142 on each transmission rod 13
The numerical value of all tension sensors 142 on transmission rod 13 is averaged;
Step 3:The tension value of each transmission rod 13 is compared with the tension value of the warp thread set in advance of controller 48 respectively
Compared with multiple tension value difference after then comparing do not calculate multiple midway drive values for controlling the rotating speed of motor 9;
Step 4:The multiple midway drive values obtained according to step 3 obtain result motivation value after averaging, and according to this
As a result motivation value control motor 9 is rotated, that is, controls the line sending speed of warp thread 8.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of let-off mechanism, including controller and at least two groups warp let-off components, warp let-off component described in every group include warp let-off roller
And tension detection unit, it is characterised in that multiple warp let-off rollers are connected by variable transmission mechanism, the gear
Mechanism is driven by motor and drives each warp let-off roller to rotate with default gearratio, and the controller couples multiple simultaneously
Power detection unit is calculated for controlling motor respectively with detecting the tension value of multiply warp according to the plurality of tension value
Multiple midway drive values of rotating speed, multiple midway drive values are asked and obtain result motivation value afterwards, and according to the result motivation value
Motor is controlled to rotate;
Also include the carding mechanism that warp thread is divided into upper and lower layer warp thread along warp thread transmission direction, carding mechanism and each warp let-off component
Correspond and set, the carding mechanism includes the two combing bars be arrangeding in parallel and is connected to the fix bar of let-off mechanism, close
The combing bar of fix bar side is connected bar by connector, is connected between two combing bars by connector, the combing bar
Between upper and lower layer warp thread, the upper and lower layer warp thread is between two combing bars in staggeredly.
2. a kind of described let-off mechanism is set according to claim 1, it is characterised in that the variable transmission mechanism includes linkage
Component and gearratio adjusting part, the linkage unit include gangbar and bevel gear set, motor and gearratio regulation group
It is connected, is connected between gearratio adjusting part and warp let-off roller by gangbar and bevel gear set transmission by gangbar between part
Connect.
3. a kind of let-off mechanism according to claim 2, it is characterised in that the gearratio adjusting part is gearbox.
4. a kind of let-off mechanism according to claim 3, it is characterised in that the warp let-off component also includes transmission rod, institute
State tension sensor and the tension spring positioned at transmission rod two ends that tension detection unit includes being located on transmission rod.
5. a kind of let-off mechanism according to claim 4, it is characterised in that each transmission rod surface is provided with some
The piezoelectric type tension sensor for detecting yarn tension is placed in groove, the groove.
6. a kind of double-beam rapier loom, including frame, beating-up mechanism, winding mechanism and drive system, it is characterised in that also wrap
The let-off mechanism described in claim 1 is included, the let-off mechanism includes two groups of warp let-off components.
7. a kind of a kind of control method of let-off mechanism based on described in claim 5, it is characterised in that
Step one:By calculating the warp tension ratio of two kinds of different warp thread, the gearratio of gearbox is given;
Step 2:Controller is by receiving the numerical value of all tension sensors on each transmission rod, by each transmission rod
All tension sensor numerical value are averaged;
Step 3:The tension value of each transmission rod is compared with controller warp tension value set in advance respectively, then
Multiple tension value difference after comparing do not calculate multiple midway drive values for controlling motor rotating speed;
Step 4:The multiple midway drive values obtained according to step 3 obtain result motivation value after averaging, and according to the result
Motivation value control motor is rotated, that is, controls the line sending speed of warp thread.
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CN110965192A (en) * | 2019-11-07 | 2020-04-07 | 苏州圣龙丝织绣品有限公司 | Let-off machine and clutch device thereof |
CN111573416B (en) * | 2020-05-30 | 2021-10-26 | 杭州华水布艺有限公司 | Constant tension yarn controlled let-off mechanism and control method |
CN112144162B (en) * | 2020-10-13 | 2021-08-31 | 岳西县长宁织绸有限责任公司 | Silk guide warp beam |
CN116024721A (en) * | 2022-12-28 | 2023-04-28 | 东台市兴源色织有限公司 | A double-shaft double-speed splicing textile machine |
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